Polishing-machine.



A. THOMPSON.

POLISHING MACHINE.

APPLICATION FILED MAR. 26, 1910.

Patented Nov. 8, 1910.

ALFRED THOMPSON, OF ERIE, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF '10 NELS' AJOHNSON, OF JAMESTOWN, NEW YORK.

POLISHING-MACHINE.

Specification of Letters Patent.

Patented Nov. 8, 1910.

To all whom it may concern:

Be it known that I, ALFRED THOMPSON, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented certain new and useful Improvements in Polishing-Machines; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, forming part of this specification.

rollers below said belt for supporting a tube diagonally to the line oftravel of said belt, and vertically movable rollers above said beltadapted to be brought into contact with the belt so as to force it downupon a tube or rod placed upon the supporting rollers.

The features of my invention are hereinafter fully set forth andexplained and illustrated in the accompanying drawings in which:

Figure 1 is a side view in elevation of my improved tube or rodpolishing machinewith parts broken away. Fig. 2 is a top or plan view ofthe same with parts broken away.

In these drawings illustrating my invention A is the frame of themachine. On one side of the frame there is mounted in bearings B B ashaft O provided with a driving pulley O, and on the end of the shaft Othere is a flanged pulley D adapted to carry a polishing belt E. On theopposite end of the frame A there are bearings B B mounted on a frame Badapted to be moved inward and outward on ways a a on the frame A, bymeans of an adjusting screw F mounted in an arm A on the frame A andoperating in a boss I) on the frame B In the bearings B there is mounteda shaft C on which a flanged pulley D is mounted in line with theflanged pulley D, and which pulleys D i and D carry the polishing beltE. The adjustability of the frame B and the mechanism carried therebybeing for the purpose of regulating the tension of the polishing belt E.

In bearings G G on the central part of the top of the frame A, I mountrollers H H directly under the belt E and adjustable diagonally to theline of travel thereof, and on a vertically movable frame I, operatingthrough a slot in the frame A and between guides J J thereon, I mountrollers K K directly above the rollers H H, and preferably set at rightangles to the travel of the belt E. These rollers K K overhang the beltE and are adapted to be brought down upon said belt so as to press itdown upon a tube or rod L resting upon the rollers H H. On the lower endof the Vertically movable part I, there is a projection I and betweenthat and a projection A on the under side of the frame A there is aspring M adapted to press the rollers K down upon the belt E with ayielding pressure. Extending through the spiral spring M and through theprojection I on the part I there is a rod N provided on its lower endwith screw-threads n and a handwhee1 11. whereby it can be adjusted, andits upper end is attached to a section of chain N which passes over apulley O mounted in the frame A, and provided with a hand-lever P,whereby the frame I carrying the rollers K K can be raised up therebylifting the rollers K K ofi of the belt E when it is desired.

In operation the rollers K K are raised to permit the end of a tube orrod L to be inserted under the belt E, between it and the rollers H H.The rollers'K are then brought down upon the belt E, substantially asillustrated in Fig. 1. The travel of the polishing belt E serves torotate the tube or rod L upon the supporting rollers H which beingdiagonal to the travel of the belt causes the tube or rod L to steadilytravel forward un-* der the belt E so as to submit all parts ofitssurface to the polishing action of said belt.

Having thus described my invention so as to enable others to constructand operate the same, what I claim as new and desire to secure byLettersPatent is:

1. The combination in a tube or rod polishing machine, of a polishingbelt, pulleys for carrying and operating said belt, a pair of tubesupporting rollers under said belt arranged diagonally to the line ofthe travel a I Mikhail? 97 08 of said belt, pressure rollers mountedabove "said belt and the diagonal rollers thereunder,

, and means for raising and lowering said pressure rollers,substantially as set forth. 2. The combination in a tube or rod 01-supporting rollers mounted under said bel 1o diagonally adjustable tothe line of its travel, a vertically movable frame overhanging saidbelt, rollers mounted therein above said belt and over the diagonalsupporting rollers, and means for raising said rollers out of contactwith said belt, substantially as set forth.

In testimony whereof I afi'ix my signature, in presence of twowitnesses.

ALFRED THOMPSON. Witnesses H. M. STUnonoN, WILLIAM E. Hna'r.

